PULLMAN, Wash. – You might say the Kuiper Belt is the frozen frontier of our solar system. Out beyond Neptune’s chilly orbit, this saucer-shaped region is home to Pluto, billions of comets, and other icy worlds.
“Out there it’s a little dim,” Worthey said. “We are pretty far from the Sun.”
In fact, it’s about 3 billion miles away. Even at the speed of a jet airplane, it would take more than 680 years to travel from Earth to the outer solar system. Fortunately, spacecraft like NASA’s New Horizons can get there much faster.
Read all of this answer from Dr. Universe at https://askdruniverse.wsu.edu/2016/04/28/kuiper-belt-what-is-it/.
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